/Engine/Source/Runtime/SlateCore/Public/Styling/SlateTypes.h
Represents the appearance of anSSplitter
struct FSplitterStyle : public [FSlateWidgetStyle](API\Runtime\SlateCore\Styling\FSlateWidgetStyle)
FSlateBrush
HandleHighlightBrush
Brush used to draw the handle in its highlight state
FSlateBrush
HandleNormalBrush
Brush used to draw the handle in its normal state